TABLE 5 Approval of a National Birth Control Program, by Socioeconomic Class, Five Latin American Cities, 1965 Percent Who Approve Upper Middle Lower Buenos Aires 37 49 61 Caracas 48 71 76 Mexico City 60 70 72 Rio de Janeiroa 63 62 69 Santiago 70 79 78 Number in Bases Buenos Aires 46 252 209 Caracas 37 160 303 Mexico City 35 161 284 Rio de Janeiro 119 128 254 Santiago 40 170 301 a"No Answers" in Rio de Janeiro ranged from 12 percent of the upper class to 20 percent of the lower, and therefore have been removed from the bases before calculating. In other countries, since the total percentage of "No Answers" does not exceed 8 percent for any class category, the "No Answers" have been left in the bases. Source: (7). tary, journalism, education, and the clergy were interviewed from a list of 140 "agreed on national leaders." Some representative findings are summarized below: ... 75 percent believe current national population growth to be slow or static. ... 56 percent desire national population growth to be rapid in the next decade. ... 74 percent believe world population growth to be a serious matter. ... 73 percent would favor a national family planning program. (9) In Medellih, Colombia, a survey of 170 educators, politicians, industrialists, journalists, and female leaders found that although two thirds to all of each of these groups had used birth control, from a third to a half thought physicians should not prescribe contraceptives (10). This response occurred in a nation where, as early as 1966, almost nine out of every ten physicians believed that "it is the physician's duty to prescribe family planning to medical cases that require them, despite the position of the Catholic Church" (11). A survey of 1,100 male and female adults in Lima, Peru, included a special group of 100 opinion leaders. Selected comparisons between the leaders and the eeneral noDiilation are piven in Table 6 (19.Yn and women from law, government, the mili-lanning and more in favor of national growth include two Latin American, two African, and two Asian states (Table 3).